[jdk17] RFR: 8268778: CDS check_excluded_classes needs DumpTimeTable_lock

[Calvin Cheung]

On Tue, 6 Jul 2021 20:00:23 GMT, Ioi Lam <iklam at openjdk.org> wrote:

> Please  review this clean backport from openjdk/jdk to jdk17.
> 
> Since the fix may impact timing and locking order, I decided to apply the fix in the mainline repo first. After 2 weeks of testing there, no problems are found. So it should be safe to integrate the fix into JDK 17.

LGTM.

-------------

Marked as reviewed by ccheung (Reviewer).

PR: https://git.openjdk.java.net/jdk17/pull/220